This chemical is primarily utilized in the field of pharmaceutical research and development, particularly in the synthesis of labeled compounds for drug metabolism and pharmacokinetic studies. Its deuteration (methyl-d3) makes it valuable for use as an internal standard in mass spectrometry, ensuring accurate quantification of drugs and metabolites in biological samples. The compound's structure, featuring a quinazoline core, suggests potential applications in the design of kinase inhibitors, which are critical in targeted cancer therapies. Additionally, its cyanoethylamine moiety may contribute to its role in the development of small molecule drugs aimed at modulating specific biological pathways. Researchers also explore its use in the preparation of intermediates for novel therapeutic agents, leveraging its unique chemical properties to enhance drug efficacy and stability.